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A car travels east at 77 km/h for 6.0 h. It then travels 40.0° east of north at 112 km/h for 6.0 h.
(a) What is the average speed for the trip?
km/h
(b) What is the average velocity for the trip?
magnitude km/h
direction ° north of east
You lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. Find the angle of incidence of the laser ray on the mirror
A straight horizontal pipe with a diameter of 1.0 cm and a length of 47 m carries oil with a coefficient of viscosity of 0.13 N · s/m2. Estimate the maximum flow speed if the flow must be streamline
In the field of psychology, what is meant by the term “catharsis”? According to Joseph Bruer, Illustrate what effect did “catharsis” have on the mental functioning of someone with a “troubled mind”? Why?
A 850-kg sports car accelerates from rest to 95 km/h in 7.0s, What is the average power delivered by the engine
A box of 10 kg is being pulled across a floor with a tension force of 50 N. Assume the box started from rest and reached a speed of 2 m/s
A speedy tortoise can run at 0.01 meters per second and a hare can run 21 times as fast. In a race they both start at the same time; however the hare stops to rest for 1.50 minutes. So the tortoise wins by a shell (20 cm).
Your car achieves 30 miles per gallon and weighs 3000 pounds. What approximately is the percentage of the energy spent on the journey that actually goes to "moving you
Write your solution on how to start from the time-dependent Schrodinger equation and arrive at the general solution of the wavefunction
A toy train is pushed forward and released at x0=2.0 m with a speed of 2.0 m/s. What is the magnitude of the train's acceleration after its wheel begins to stick
An arrow is shot from the top of a castle wall. It hits the ground 543 m away from the base of the wall with a velocity of 79.0 m/s at an angle of 29.7 degrees below the horiztonal
A rock climber throws a small first aid kit to another climber who is higher up the mountain. What is the vertical height between the two climbers
A 206 n sign hangs from the end of a 3.30 m long bar. find the two forces exerted by bolts A and B
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